Shell for cartridges.



A. LOEB.

SHELL FOR CARTRIDGES. APPLICATION FILED DEG.14, 1908.

957,171; v Patented May 3,1910.

Ewen-[Cr force of ADAM LOEIK, 0F PORTLAND, OREGON.

SHELL son dngriarnens.

Specification of Letters Patent, Application filed December 14', 1908.

Serial No. 467,559.,

To allwhom it may concern:

Be. it known that I, ADAM Lose, a citizen of the United States, and a resident of Portland, in the county of Multnomah and State of Oregon, have invented a certain new and useful Improvement in Shells for Cartridges, of which the following is a specification, reference being had to the accompanying drawings as constituting a part thereof. 1

This invention has for itsobject to cause the igniting flash produced by the cap of the cartridge to-travel from the center of the base of the powder charge radially and simultaneously forward to the whole cross section area of the main body of the charge; and I accomplish my object yproviding the butt end of the cartridge with a conical flash chamber. That is, the powder space atthe butt end of the cartridge being tapered downward to the central cap-hole in the butt end of the cartridge. By such arrangement is avoided the waste of energy during the interval that the flash, under ordinary conditions, would travel laterally and backward; for by my improved construction the mth of the flash is confined to a radial and florward direction, and communicates the igniting flash simultaneously to the entire cross-section area of the main body of the powder.

The result obtained by my improvements are: The quantity of powder at present used in the common straight shell.may be reduced without diminishing the degree of force of penetration imparted to the projectile, compared with that obtained from a normal char eof powder; or, by using the resent stan ard unit or quantity of powder in my improved cartridge, the force of penetration is reatly increased. In my experiments, I ave found this increase in the penetration to be as great as twothirds over the degree of penetration obtained from the same quantity of powder Furthermore,by reason of eliminating the backwa'rd movement of the igniting. flash in the base of the .powder charge, the 'recoil of the gun is diminished.

My improvement can be added to any common form of shell by merely inserting, 1n

)owder terin removed; and Fig. 3 is said flash aperture, as shown. I the same efi'ect, obvithe base thereof, a block adapted to be placed over the cap in the base of the cartridge, and provided with a cunea'te central chamber, and having a flash aperture regiswith the cap. Re erririg now to the drawings as illustrating more clearly the application of my invention: Figure l is a sectional elevation of a common straight-side cartridge, to

which my improvement is added by insertmg in the base thereof a block provided with a cuneate central flash chamber having a flash aperture registering with the cap; Fig. 2 is atop view of the shell shown in Fig. 1, with the shot and powder thereof a sectional elevation. showing a modification in this, that the base of the shell itself is m'ade with tapering walls, centering in a central flash aperture registering'with the cap, inserted in the base of the cartridge. I

Having reference now to the letters in the several views, and referring in the first instance to Figs. 1 and 2: the shell g, is of the common straight-side type,\ ml is adapted to have a cap, I), inserted in the base thereof. \Vithin the shell, at thchasc. is inserted-a bloclgc, provided with a cuneate or tapering flash chamber, (I. centering in an aperture 6, at the base, which flash aertnre re isters with the cap' I). The bl ock 0 may e made of paper, or other suitable materialr In order to adapt the block, 0', to be placed over the cap, as shown in Fig. 1, the cavity f, whereby the block is adapted to be placed over the cap I). It will now be apparent that the instant .the flash reaches the base of the flash chamber, (Z, and ignites the powder therein contained, such flash must travel simultaneously'in a radial and forward direction to the whole cross sec,- tion area of the mainbody of the powder charge.

In the modification shown in Fig. '3, the shell, g, isprov'ided at the base with a contracted wall-portion, to a-central flash aperture, and lining adapted to have a cap, a, inserted in the base of The flash chamben j, produces ously, as the chamber 11, above described.

bottom thereof is made with a h, taperin downward p Figs. 1". mid 3 represen ytl le powduced portion 0 en at its outer end and r0- deg cI erge. I jecting outwar y from, the tapered en c ann: A eartridgeshell formed of a thin inate- ADAM 5 rial open and comprising a cylindrical bbdy Witnesses:

- portion tapered at'one'end to form a conical S. H. HAIN s,

Inner flaring chamber, and a cylindgi'eal re- GEQIL LQZNG. 

